Carrier 50FF 020 - Page 6

6
3 - POSSIBLE TYPES OF ASSEMBLIES
Depending on the indoor airfl ow direction
Indoor airfl ow direction
0 Lower supply and lower return
2 Lower supply and lateral return
R1 assembly, Direction 0
“In-line” standard
R1 assembly, Direction 2
“In-line” standard
R2 assembly, Direction 0
Economizer, 2 dampers: fresh air damper
interlocked with return damper
R2 assembly, Direction 2
Economizer, 2 dampers: fresh air damper
interlocked with return damper
Legend
S Lower air supply R Lower air return F Fresh air intake
S’ Lateral air supply R’ Lateral air return E Exhaust air outlet
RP assembly, Direction 0
Lower return plug-fan
RW assembly, Direction 0
Lower return plug-fan + Rotary heat
exchanger (passive recovery)
R1 assembly, Direction 0
“In-line” standard
R1 assembly, Direction 2
“In-line” standard
R2 assembly, Direction 0
Economizer, 2 dampers: fresh air damper
interlocked with return damper
R2 assembly, Direction 2
Economizer, 2 dampers: fresh air damper
interlocked with return damper
RP assembly, Direction 0
Lower return plug-fan
RW assembly, Direction 0
Lower return plug-fan + Rotary heat
exchanger (passive recovery)
RS
F
E
RS
E
F
RS
F
E
S
F
R
E
S
F
R
S
F
R
S
F
R
S
F
R
SR
R
S
SR
R
S
R assemblies: “in-line” (models 052 to 062): R-410A only
R assemblies: “in-line” (models 070 to 073): R-410A only